Storage battery



June 15. 1926.

E. GREGG STORAGE BATTERY Filed Dec. 13, 1923 HUN 1 Ill. .1

IN VEN TOR ATTORNEYS WTTNESSES Patented June-"1 5,

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Application filed December 13, 1823. Serial No. 880,550.

This invention relates to storage-batteries and is more particularly directed to a seal for the 'terinlnals of batteries adapted for use on an automobile.

An object of the invention is the provision of a device for sealing a battery against loss of fluid at points where theterminals pro- I ject through the top-section ofthe battery applied.

road shocks to an automo ile and thereby and which seal acts as a resilient cushion to prevent breakage of the top during travel of the automobile to which the battery. is-

A further object of the invention is'the provision of an elastic compressible seat for 15 the battery posts where said posts project through the shell-of said battery and which seal will compensate for 'ars incident to i prevent fracture of the material of said top ing drawing forming-a part of the specification; nevertheless it is to be understood that the invention is not confined to the disclo sure, being susceptible of such changes and plied thereto.

modifications which shall define no material departure from the salient features of the,

invention as expressed in the appended claims.

In the drawin s: Q V

Figure 1 is a agmentary view inplan of a battery showing my invention applied thereto.

Figure 2 is a transverse vertical section of a battery cell showing my invention ap- Referring more particularly to the draw.

ings, a storage or secondary battery box is shown comprising a box or container 1 in which are located in juxtaposition a plurality of cells 2. A cover 3 formed of hard rubber or a composition used for the purpose, is adapted to be applied to the tops of each cell for closing the same. The periphery of the cover is sealed in the usual manner to the top of said cell to prevent loss of ,fiuid from the cell.

The cover has a central opening or passage 4 having an internally threaded portion adapted to, receive the external threads of a cap nut 5. A restricted passage 6 is provided in the cap nut for the usual purpose. The cap nut 5 permits inspection of the interior of a cell and likewise permits "refilling of the cell with distilled sary.

The cover '3 is positel ends with shaped pockets 7 in that portion of the material of the top which forms'thebottom of said pocket.

. A post9'integrally formedwith the pillar provided adjacent its opinverted fru'sto-conically straps 10 is adapted to'be inserted through the assage .8 and have its upwardly thre ed end 11 adaptedto receive a lead washer 12 and a lead nut 13. The outer pro; jecting end 14 of the post .9. is adapted to re water when necesandan opening 8 located ceivej the usual clamping element 14 of p the battery wire. I When a coI'1'nec'tor-13 is employed be.-' tween posts ofthe cell, the nut 13. may be omitted.

Locatedwithin the pockets 7 and having a central opening through which the post 9 is inserted is a frusto-conically shaped gasket 15 having its inner reduced end seated upon the bottom of the pocket 7 while its outer enlarged end is adapted to support the washer 12. When the nut 13 is screwed down upon washer 12 the compressible gasket 15 is forced intoengagement with the walls of the ocket and the outer walls of the post-9 and seals this rtion of the cover 3 against the loss of fluid. It will be noted in Figure 2 that the upper end of thegasket 15 is ada ted to pro ect beyond'the upper surface of t e cover 3 even when the nut 13 is screwed to its lower limit so that the lead 'nut 13 and washer 12 will not at any time come in contactwith the fragile material of the cover and thereby cause breakage of the same.

The inner end of the post 9 adjacent its connection with the pillar strap 10 is provided with a shoulder 16 upon which is mounted a rubber washer 17. The rubber washer 17 is adapted to be compressed between the shoulder 16 and the bottom 18 of the pocket 7 thereby cooperating with the gasket 15 for sealing the post against the thermore, the material of the gasket 15 and the washer 17 being compressible, is forced into close contact with the walls of the pocket 7, the inner face of the cover 3 and the outer wall of the st 9, so that the gasket and washer will orm a. seal against the loss of fluid at points where the post projects through the cover.

What I claim is:

1. In a storage battery cell, the combination of a cover havin a depressed pocket and an apeiture at the ottom of said pocket adapted to receive the post of a pillar strap, a compressible gasket in the pocket surrounding the post and projecting beyond the outer surface of the cover, a compressible washer on the post, said post being provided with a shoulder adapted to receive the washer, and means for locking the post to the cover and compressing the gasket and washer into sealing relation with the post and the opening in the cover.

2. In a storage battery cell, the combination of a cover having a frusto-co-nically shoulder adapted to receive the washer, and

means for locking the post to the cover and compressing the gasket and washer into sealing relation with the post and the opening in the cover.

E. GREGG. 

